“Girl bye,” Chyna (née Angela White) captioned the decade-old photo, with a laughing emoji. “Chubby face 17 years old.”
The star is pictured with straight, dark-blond hair, a traditional yearbook portrait top and a white choker around her neck.
While Chyna and her boyfriend have been inseparable since they went public with their romance in January, the model wasn't a guest at his epic St. Patrick’s Day–themed 29th birthday party on Saturday, March 19. Most of the Kardashian-Jenner clan were in attendance, including Kim, Kourtney, Kendall, Kylie, Kris, Kanye West and Scott Disick.
Kourtney, 36, shared a family portrait from the spirited event on Instagram, in between documenting the celebration on Snapchat.
Rob celebrated his actual birthday on Thursday, March 17, by cheating on his diet with a late-night trip to In-N-Out burger in Tarzana, California, with Chyna.
Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!